Electromagnetic device producing alpha constant moving force



June 7 1927.. 1 ,631,801

, A. EPITAUX ELECTROMAGNETIC DEVICE PRODUCING A CONSTANT MVING FORCE Filed A. 22, 1925 Patente'd Juhe 7,1927.

UNITED STATES ALBERT EPI1AUX, OIE PARIS, FRANCE.

ELECIRMGNEJC DEVICE IERODUCING A CONSTANT MOV1NG FORCE.

Application flled August 22, 1925, Serial No. 51,740, and in France September 2, 1924.

This invention relates to electro-magnets and has for its object an improvcd electromagnet arrangement producing a constant moving force capable of findmg 1ts application inall the apparatus which need only a feeble moving force, but which force continuous.

According to this invention I provide an electro-magnet comprising two pivoted or otherwise movable spring actuated armatures each provided with a contact piece adapted to close the existing current circuit when they are in contact, 'characterized in that the contact on one of the armatures which actu- 7 ates the ratchet wheel is' fixedly secured to said armature while the contact on the other' armature is resiliently secured thereto, the latter armature having less inertia.

In operation, the motion of the armature Which actuates a ratchet wheel, closes the existing electric circuit, the said circuit being held closed during the motion of the said first armature by the second armature of lesser inertia and thereforehaving a greater speed than the first, and so disposed as to make contact between the two contact p1eces in the circuit as long as the motion of the first armature lasts, said first armature opening the circuit whe11 it reaches the end of its movement, when the second armature 1s sharply pulled back in the .inoperative position by a spring, thefirst armature clos1ng the circuit again after having followed for a certain time the slow motion of the ratchet wheel, as it reaches its furtherest position from the core of the electro-magnet.

Referringto the drawing loft herewith:

The figure illustrates, as an example, one particular manner of carrying out the invention, and is a diagrmmatic representa tion of an apparatus embodying the above described features.

A 'soft iron core 1 of a smaller section at one end than elsewhere carries a winding 2 producing under the action of the current the simultaneous attraction of the two armatures 3 and 4. The fixed oke 5 completes the magnetic circuit. The armature 3 is extended by a lever 6 carrying a pawl 7. The spring 9 provides the motive force, transmitted by the pawl 7 to the ratchet wheel 8. When the armature 3 which slowly moves further from the core of the electro-magnet arrives at the end of its displacement, the contact piece 10 buts against the contact spring 11 carried by the armature 4 and closes the electric circuit of the electro-magnet. The two armatures 3 and 4 are attracted, but as the armature 4 is endowed with a greater speed owing to its less inertia and its greater attraction, it maintains the contact spring 11 pressed against the contact piece 10 until the moment when the armature 3, arriving to its closest position to the core, abandons, by means of the contact piece 10, the contact spring 11; during this movement the pawl advances one tooth on the ratchet wheel 8.

Once the circuit is interrupted, the armature 4:, actuated by the spring 12 is sharply pulled back to the non-operative position determined by the insulated stopscrw 13.

The armature 3 returns back but slowly, controlled in its motion by the rotation of the ratchet wheel 8. The cycle repeats aga1n.

What I daim and desire to secure by Letters Patent of the United States is:

1. An electro-magnetic motor, comprising a soft iron core of reduced section at one end, a winding carried by said core, a fixed yoke completing the magnetic circuit, a first armature placed on the side of lar er section of the core, a lever extending said armature on one side, a contact piece placed on the other side of the armature, a second armature opposite the smaller diameter of the core, a contact piece carried by said arma-- ture opposite the contact pieceof the first armature, and means to drawthe armatures back in their inactive position. r

2. An electro-magnctic motor comprising a soft iron core of reduced section at one end, a winding carried by said core, a fixed yoke completing the magnetic circuit, a first armature placed on the side of larger section of the core, a lever extending said armature on one side, a pawl on said extension, a ratchet Wheel engaging said pawl, a spring acting to draw backthe armature, a contact piece on the other side of the armature, a second armature opposite the smaller section of the core, a contact spring carried by said armature opposite the contact of the first armature, an abutment screwup'on the fixed yoke and a spring designed to draw back the second armature.

3. An electro-magnetic'motor comprising: a soft iron core, a winding carried by said core, a first armature closing by means of a contact piece the electric circuit of the elec the two contacts lasting as long as the movetro-magnet, a second armature kecping the ment of the first armature, which opensthe circuit closed during the movemnt of the circuit when it reaches the end bf its movefirst armature, said second armature possessment.

. 5 -ing a greater attractive force, which pro- In testimony that I daim the foregoing as duces a highpressure between the two elecmy invention, I have signed my name; trodes of the contact, the pressure between ALBERT EPITAX. 

